| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 6 |
4.8%
|
| 2 | Every few weeks | 23 |
18.3%
|
| 3 | Every few months | 27 |
21.4%
|
| 4 | Not at all | 70 |
55.6%
|
| Sysmiss | 18 |